linux-kernel - Re: [PATCH] drm: panel: jd9365da: fix reset signal polarity in unprepare

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Message-Id: <174530788965.2868524.14547275141165599808.b4-ty@linaro.org>
Date: Tue, 22 Apr 2025 09:44:49 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Jagan Teki <jagan@...eble.ai>, 
 Jessica Zhang <quic_jesszhan@...cinc.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>, 
 Hugo Villeneuve <hvilleneuve@...onoff.com>, 
 Hugo Villeneuve <hugo@...ovil.com>
Cc: stable@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm: panel: jd9365da: fix reset signal polarity in
 unprepare

Hi,

On Thu, 17 Apr 2025 15:55:06 -0400, Hugo Villeneuve wrote:
> commit a8972d5a49b4 ("drm: panel: jd9365da-h3: fix reset signal polarity")
> fixed reset signal polarity in jadard_dsi_probe() and jadard_prepare().
> 
> It was not done in jadard_unprepare() because of an incorrect assumption
> about reset line handling in power off mode. After looking into the
> datasheet, it now appears that before disabling regulators, the reset line
> is deasserted first, and if reset_before_power_off_vcioo is true, then the
> reset line is asserted.
> 
> [...]

Thanks, Applied to https://gitlab.freedesktop.org/drm/misc/kernel.git (drm-misc-fixes)

[1/1] drm: panel: jd9365da: fix reset signal polarity in unprepare
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/095c8e61f4c71cd4630ee11a82e82cc341b38464

-- 
Neil